DEXG Pool Trade Out

The use case is a "Trade Out" swap in a single transaction:
We have 1 ETH, and 
Want to wrap this 1 ETH to 1 WETH, and
Swap 1 WETH for an amount of tokens from the pool poolAddress, and then
Sell the the amount of tokens in Uniswap V2
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    interface IUniswapV2Router {
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        function swapExactTokensForETH(
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            uint amountIn, 
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            uint amountOutMin, 
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            address[] calldata path, 
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            address to, 
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            uint deadline
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        )
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            external
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            returns (uint[] memory amounts);
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    }
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​
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    interface IDextokenPool {
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        function swapExactETHForTokens(
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            uint amountIn,
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            uint minAmountOut,
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            uint maxPrice,
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            uint deadline
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        ) external returns (uint);
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    }
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​
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    function tradeOut(
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        address[] memory path,
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        address poolAddredss,
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        uint deadline
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    ) 
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        public 
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        payable
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    {
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        uint amount = msg.value;
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​
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        IWETH(WETH).deposit.value(amount)();
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        if (IERC20(WETH).allowance(address(this), pool) < amount) {
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            IERC20(WETH).safeApprove(pool, MAX);
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        }
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​
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        /// DEXG Swap: WETH to Token
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        IDextokenPool(pool).swapExactETHForTokens(
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            amount,
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            0,
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            MAX,
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            deadline
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        );
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        /// Uniswap: [Token, ..., WETH]
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        address token = path[0];
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        uint tokenAmount = IERC20(token).balanceOf(address(this));
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​
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        if (IERC20(token).allowance(address(this), uniV2Router) < tokenAmount) {
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            IERC20(token).safeApprove(uniV2Router, MAX);
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        }
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        IUniswapV2Router(uniV2Router).swapExactTokensForETH(
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            tokenAmount, 
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            0, 
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            path, 
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            address(this), 
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            deadline
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        );
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        msg.sender.transfer(address(this).balance);
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    }
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Last modified 5mo ago

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